We've all seen it. A glass box, smoke coming out one end and a car in the middle. I have the car, I have an emitter, and I have a fan, as illustrated below.
http://i969.photobucket.com/albums/ae173/bugme143/thecar.jpg

http://i969.photobucket.com/albums/ae173/bugme143/thecarscenes.jpg

Now, I am trying to simulate said car lab, but am having difficulty. The car and the road are both Passive rigid bodies. Any ideas, or am I going to have to insert the smoke and use that?

mduvekot

09-01-2010, 11:30 PM

Better take a look at the [Dynamics] Fluid Effects->Get Fluid Example... Miscellaneous: WindTunnel.am

bugme143

09-02-2010, 12:46 AM

how would I do it? make a fluidic volume container?

i know what I'm asking is probably obvious... and i apologize in advance.

mduvekot

09-02-2010, 11:32 AM

Read the notes section in the Attribute Editor for the windTunnelShape node.

mandark1011

09-02-2010, 02:42 PM

you need to dial up your substeps. Depending on how fast your particles are travelling they may have intersected the surface in between frames.
But as thinkr has mentioned the windtunnel preset has a nice expression for setting in velocity to normalize velocities through a fluid container, perfect for this type of effect.

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